Jar-closure fastener.



UNITED sTATEs PATENT oFFion.

FRANK CANFIELD, OF DENVER, COLORADO, ASSIGNOR TO .GEORGE W. SKINNER, JR., OF DENVER, COLORADO.

JAR-CLOVSURE FASTENEFL Specification of Letters Patent.

Patented Jan. 16,. 1906.

Application filed August 3, 1904:. Serial No. 219,276.

To @ZZ whom' it may concern:

Be it known that I, FRANK CANFIELD, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Jar-Closure Fasteners g and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in fastening devices for the closures of jars or other receptacles adapted to hold fruit and other articles where it is necessary that the closure should be held tightly and securely in place, making the jar or other receptacle air and liquid tight.

The object of my improved device is not only to provide a fastening device adapted to give the desired security so far as tightness is concerned, but also to provide a device capable of being quickly and easily manipulated or thrown from the locked to the unlocked position, and vice versa, but also a device which when in place shall possess great security against being accidentally unlocked.

This is an important feature in a device of this class, since goods put up in jars upon which fasteners of this kind are used are often shipped long distances, and it is exceedingly important that the fastening devices applied to the closure be of such a nature that they shall not be easily unlocked by accident.

To this end my improved fastening device, which is mounted on a bail of ordinary construction, occupies a position crosswise of the bail, and the top of the closure is preferably formed slightly concave where the fasteningcam is seated. By manipulating the bail the fastening-cam when in the locked position may be moved inwardly, whereby the outer extremity of the cam lies within the concave recess of the closure and is thus prevented from being accidentally unlocked, while, on the other hand, when it is desired. to unlock the cam the bail may be moved in the opposite direction, whereby the extremity of the cam remote from the bail may be made to i the jar.

project beyond the raised central portion of the closure, giving the user an opportunity to throw the cam easily to the unlocked position.

Having briefly outlined my improved construction, .as well as the function it is expected to perform, I will proceed to describe the same in detail, reference being made to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 isan elevation of a jar and closure, showing my improved fastening device in place thereon. Fig. 2 is a fragmentary view of a jar shown in section, taken on the line 2 2 of Fig. 1, showing the fastening-cam in the locked position. Fig. 3 is a similar view showing the cam thrown to one side, whereby it is in position to be unlocked. Fig. 4 is a similar view showing the cam in the unlocked position. Fig. 5 is a perspective view in detail of the cam, shown on a larger scale.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate an ordinary jar, and 6 the cap or closure, which rests on the gasket 7, placed on the upper edge of the jar. As shown in the drawings, this closure is provided with a shallow concavity 8 in the central portion of its top. Beyond this top the closure extends downwardly, as shown at 9, whereby when the locking-cam 10 is pushed to one side, as shown in Fig. 3, its extremity remote from the bail 11 will 'occupy a position whereby the cam may be readily unlocked or thrown to the position shown in Fig. 4. The bail is of ordinary construction, and its lower extremities are turned inwardly, as shown at 12, Where they engage recesses formed in the opposite sides of the body of The cam 10 is provided with a transverse opening whereby it is adapted to be threaded on the bail, and when in position thereon, as shown in the drawings, the cam occupies a position crosswise of the bail. This cam is preferably formed of sheet metal whereby it has two side parts whose lower edges engage the closure when the cam is in the locked position. It isV evident, however, that, if desired, the cam may be made solid without interfering with the proper performance of its function.

IOO

From the foregoing description the use and I operation of my improved device will be readily understood. Assuming that vthe cam is in the unlocked position, as shown in Fig. 4, it is only necessary in order to throw it to the locked position to give it a turn on the bail, whereby its part remote from the bail is thrown downwardly to engagement the closure. The cam in this event will usually be in the position shown in Fig. 3. Then by moving'the cam transversely on the closure, which can be easily done by pushing the bail in the proper direction, the extremity of the cam remote from the bail is brought within the concave portion of the closure, whereby it cannot be caught upon anything which might accidentally throw it to the unlocked position. This locking position is best illustrated in Fig. 2. Now if it is desired to unlock the cam the bail is shifted to bring the cam to the position shown in Fig. 3, when the user may easily throw it to the position shown in Fig. 4.

Having thus described my Invention, what I lclaim is- The combination with a ar or receptacle having a cap or closure which is highest in the center and provided with a shallow exterior concavity formed in its highest part, of a bail pivotally mounted on the body of the receptacle and extending upwardly over the cap, and a cam-lever having two sides connected at the top and whose lower edges are separated7 the said lever having transverse openings in its sides through which the bail passes, whereby the lever is fulcrumed on the bail, the lever occupying a position crosswise of the bail, with its lower edges engaging the concavity when in the locked position.

vIn testimony whereof I aiix my signature in presence of two witnesses.

FRANK CANFIELD.

Witnesses:

A. J. O BRIEN, DENA NELSON. 

